Aerodynamic actuator latch with magnetic return spring for hard disk drive
US5319511A · kind A · utility
50Cited by
6References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 19, 1993 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Jan 19, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/54
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An aerodynamic actuator latch for a disk file uses a fringe field from permanent magnets of the actuator assembly to generate a reverse bias torque, in lieu of a separate return spring. The latching mechanism includes a stop arm portion which cooperates with an actuator arm portion to ensure that the head of a disk file locked in a landing zone when the storage disk is not rotating. The reverse bias torque is preferably provided to the actuator mechanism via cooperation of a ferromagnetic slug within the stop arm portion and the fringe field of the actuator magnets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.